/* ============================================================
   ТЕХНИКА ЛАБ — premium editorial (robot.com register)
   Warm off-white · ink · one acid-yellow accent. No shadows, no gradients.
   Content is ALWAYS visible; motion is progressive enhancement.
   ============================================================ */

:root{
  --ink:#262626;
  --paper:#f8f6f3;
  --acid:#fff65d;
  --black:#111110;
  --bone:#ffffff;
  --stone:#6f6e6b;
  --ash:#9a9895;
  --hair:rgba(38,38,38,.14);
  --hair-2:rgba(38,38,38,.08);
  --hair-inv:rgba(248,246,243,.16);

  --f:'Inter',ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  --exp:cubic-bezier(.16,1,.3,1);
  --quint:cubic-bezier(.22,1,.36,1);
  --io:cubic-bezier(.65,0,.35,1);

  --max:1320px;
  --pad:clamp(20px,5vw,88px);
  --narrow:720px;
  --pad-xl:clamp(120px,14vw,210px);
  --pad-l:clamp(92px,10vw,164px);
  --pad-m:clamp(68px,8vw,124px);

  --r-nav:24px; --r-btn:30px; --r-card:10px; --r-full:9999px;
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  background:var(--paper); color:var(--ink); font-family:var(--f);
  font-size:clamp(16px,.96rem + .2vw,18px); line-height:1.6; font-weight:400;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden; position:relative;
}
a{ color:inherit; text-decoration:none; }
img,video{ display:block; max-width:100%; }
::selection{ background:var(--acid); color:var(--ink); }
section[id]{ scroll-margin-top:108px; }

/* grain */
.grain{ position:fixed; inset:0; z-index:9; pointer-events:none; opacity:.045; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

/* ---------- type ---------- */
.nano{ display:inline-block; font-size:12px; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--stone); }
.nano--acid{ color:var(--acid); }        /* nano on dark backgrounds: hero, dark, cta */
.accent .nano{ color:var(--ink); }       /* nano on the yellow block */
.dark .nano{ color:#b7b6b3; }

.h1{ font-weight:600; font-size:clamp(2.5rem,1.5rem + 4vw,5.5rem); line-height:.99; letter-spacing:-.038em; }
.h2{ font-weight:600; font-size:clamp(2rem,1.3rem + 2.6vw,3.75rem); line-height:1.02; letter-spacing:-.032em; }
h3{ font-weight:600; letter-spacing:-.022em; }
.lead{ font-size:clamp(1.125rem,1rem + .5vw,1.4rem); line-height:1.42; letter-spacing:-.01em; color:var(--stone); max-width:34em; }
em{ font-style:normal; }

/* line-mask headings: container visible, inner lines slide up */
.ml{ display:block; overflow:hidden; padding-bottom:.02em; }
.ml > span{ display:block; }

/* ---------- buttons ---------- */
.btn{ position:relative; display:inline-flex; align-items:center; justify-content:center;
  font-family:var(--f); font-weight:500; font-size:16px; letter-spacing:-.01em;
  padding:15px 28px; border-radius:var(--r-btn); border:1px solid transparent; cursor:pointer;
  transition:background .3s var(--quint), color .3s var(--quint), border-color .3s var(--quint), transform .5s var(--quint); }
.btn > span{ display:inline-block; will-change:transform; }
.btn--yellow{ background:var(--acid); color:var(--ink); }
.btn--yellow:hover{ background:var(--ink); color:var(--acid); }
.btn--dark{ background:var(--ink); color:var(--paper); }
.btn--dark:hover{ background:var(--acid); color:var(--ink); }
.btn--ghost{ background:transparent; color:var(--ink); border-color:var(--ink); }
.btn--ghost:hover{ background:var(--ink); color:var(--paper); }
.btn--ghost-light{ background:transparent; color:var(--paper); border-color:rgba(248,246,243,.55); }
.btn--ghost-light:hover{ background:var(--paper); color:var(--ink); }
.btn--block{ width:100%; }

/* animated underline for text links */
.nav__links a, .footer__nav a{ position:relative; }
.nav__links a::after, .footer__nav a::after{ content:""; position:absolute; left:0; bottom:-3px; height:1px; width:100%;
  background:currentColor; transform:scaleX(0); transform-origin:right; transition:transform .32s var(--quint); }
.nav__links a:hover::after, .footer__nav a:hover::after{ transform:scaleX(1); transform-origin:left; }

/* ============ NAV ============ */
.nav{ position:fixed; top:18px; left:50%; transform:translateX(-50%); z-index:60;
  width:min(calc(100% - 32px),var(--max)); display:flex; align-items:center; gap:20px;
  background:var(--bone); border:1px solid var(--ink); border-radius:var(--r-nav);
  padding:11px 12px 11px 22px; transition:border-color .3s; }
.nav__brand{ font-weight:700; font-size:16px; letter-spacing:-.02em; }
.nav__links{ display:flex; gap:26px; margin-left:auto; }
.nav__links a{ font-size:14.5px; font-weight:500; }
.nav__phone{ font-size:14px; font-weight:600; padding:9px 17px; border:1px solid var(--ink); border-radius:var(--r-full); white-space:nowrap; transition:background .25s var(--quint), color .25s var(--quint); }
.nav__phone:hover{ background:var(--ink); color:var(--paper); }
.nav__burger{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:6px; margin-left:auto; }
.nav__burger span{ width:22px; height:2px; background:var(--ink); border-radius:2px; transition:.3s var(--exp); }
.nav.open .nav__burger span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav.open .nav__burger span:nth-child(2){ opacity:0; }
.nav.open .nav__burger span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

.mobile-sheet{ position:fixed; inset:0; z-index:55; background:var(--paper);
  flex-direction:column; justify-content:center; gap:6px; padding:var(--pad); display:none; }
.nav.open ~ .mobile-sheet{ display:flex; }
.mobile-sheet a{ font-size:clamp(30px,9vw,44px); font-weight:600; letter-spacing:-.03em; padding:8px 0; }
.mobile-sheet__phone{ font-size:20px!important; font-weight:600; color:var(--stone); }
.mobile-sheet .btn{ margin-top:18px; font-size:18px; align-self:flex-start; }

/* ============ HERO ============ */
.hero{ position:relative; height:100svh; min-height:640px; width:100%; overflow:hidden; background:var(--black); }
.hero__media{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  animation:heroSettle 2.6s var(--exp) both; will-change:transform; }
@keyframes heroSettle{ from{ transform:scale(1.09); } to{ transform:scale(1); } }
.hero__scrim{ position:absolute; inset:0; z-index:1;
  background:linear-gradient(to top right, rgba(17,17,16,.74) 0%, rgba(17,17,16,.34) 44%, rgba(17,17,16,0) 74%),
             linear-gradient(to bottom, rgba(17,17,16,.34), rgba(17,17,16,0) 22%); }
.hero__top{ position:absolute; z-index:3; left:0; right:0; top:calc(18px + 78px);
  max-width:var(--max); margin-inline:auto; padding-inline:var(--pad); }
.hero__inner{ position:absolute; z-index:3; left:0; right:0; bottom:clamp(56px,9vh,110px);
  max-width:var(--max); margin-inline:auto; padding-inline:var(--pad); will-change:transform; }
.hero__title{ color:var(--paper); font-weight:600; font-size:clamp(3rem,1.4rem + 6.2vw,7.5rem);
  line-height:.95; letter-spacing:-.045em; margin-bottom:26px; }
.hero__title em{ color:var(--acid); }
.hero__lead{ color:rgba(248,246,243,.86); font-size:clamp(1.05rem,1rem + .5vw,1.4rem); line-height:1.4; max-width:520px; margin-bottom:32px; }
.hero__cta{ display:flex; gap:12px; flex-wrap:wrap; }
.hero__meta{ position:absolute; z-index:3; right:var(--pad); bottom:clamp(56px,9vh,110px);
  display:flex; flex-direction:column; gap:4px; text-align:right; color:rgba(248,246,243,.8); font-size:14px; }
.hero__meta .nano{ color:var(--acid); }
.hero__scroll{ position:absolute; z-index:3; left:50%; transform:translateX(-50%); bottom:26px; width:1px; height:52px; background:rgba(248,246,243,.4); overflow:hidden; }
.hero__scroll span{ position:absolute; left:-1.5px; top:0; width:4px; height:14px; border-radius:2px; background:var(--acid); animation:scrollBob 1.9s var(--io) infinite; }
@keyframes scrollBob{ 0%{ transform:translateY(-16px); opacity:0; } 30%{ opacity:1; } 100%{ transform:translateY(52px); opacity:0; } }

/* ============ BRANDS ============ */
.brands{ padding:clamp(30px,4vw,56px) 0; border-bottom:1px solid var(--hair-2); overflow:hidden; }
.brands__label{ text-align:center; color:var(--stone); font-size:15px; margin-bottom:26px; padding-inline:var(--pad); }
.marquee{ overflow:hidden; -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent); mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent); }
.marquee__track{ display:flex; align-items:center; gap:clamp(28px,4vw,52px); width:max-content; animation:marquee 42s linear infinite; }
.marquee:hover .marquee__track{ animation-play-state:paused; }
.marquee__track span{ font-weight:700; font-size:clamp(22px,2.8vw,34px); letter-spacing:-.02em; color:var(--ink); opacity:.45; transition:opacity .3s var(--quint); }
.marquee__track span:hover{ opacity:1; }
.marquee__track i{ font-style:normal; color:var(--acid); font-size:16px; -webkit-text-stroke:.6px var(--ink); }
@keyframes marquee{ to{ transform:translateX(-50%); } }

/* ---------- shared section head ---------- */
.sec-head{ max-width:var(--max); margin-inline:auto; padding-inline:var(--pad); margin-bottom:clamp(40px,5vw,72px); }
.sec-head .nano{ margin-bottom:18px; }

/* ============ SPLIT ============ */
.split{ max-width:var(--max); margin-inline:auto; padding:var(--pad-xl) var(--pad);
  display:grid; grid-template-columns:minmax(0,5fr) minmax(0,7fr); gap:clamp(32px,5vw,80px); align-items:center; }
.split__text .nano{ margin-bottom:20px; }
.split__text .h2{ margin-bottom:24px; }
.split__text .lead{ margin-bottom:30px; }
.ticks{ list-style:none; margin-bottom:36px; }
.ticks li{ position:relative; padding:14px 0 14px 32px; border-top:1px solid var(--hair-2); font-size:16px; }
.ticks li:first-child{ border-top:0; }
.ticks li::before{ content:""; position:absolute; left:1px; top:19px; width:13px; height:8px; border-left:2px solid var(--ink); border-bottom:2px solid var(--ink); transform:rotate(-45deg); }
.split__cta{ display:flex; gap:12px; flex-wrap:wrap; }
.split__media{ overflow:hidden; border-radius:var(--r-card); }
.split__media img{ width:100%; height:clamp(340px,44vw,580px); object-fit:cover; background:var(--hair-2); }

/* ============ STITCHED CELLS ============ */
.stitched{ max-width:var(--max); margin-inline:auto; display:grid; gap:1px; background:var(--hair);
  border-block:1px solid var(--hair); }
.accent .stitched{ background:rgba(38,38,38,.18); border-color:rgba(38,38,38,.18); grid-template-columns:repeat(4,1fr); }
.stitched--steps{ grid-template-columns:repeat(4,1fr); list-style:none; }
.cell{ background:var(--paper); padding:clamp(28px,3vw,40px) clamp(22px,2.4vw,32px); display:flex; flex-direction:column; }
.accent .cell{ background:var(--acid); }
.cell__n{ font-family:var(--f); font-weight:600; font-size:clamp(30px,4vw,52px); line-height:1; letter-spacing:-.03em; color:var(--ink); opacity:.9; margin-bottom:clamp(24px,4vw,56px); font-variant-numeric:tabular-nums; }
.cell h3{ font-size:clamp(1.3rem,1.1rem + .8vw,1.7rem); margin-bottom:10px; }
.cell p{ font-size:15px; line-height:1.5; color:var(--ink); opacity:.82; }
.accent .cell p{ opacity:.78; }
.stitched--steps .cell p{ font-size:clamp(15px,1.6vw,17px); opacity:.72; margin-top:auto; }

/* ============ ACCENT (yellow) ============ */
.accent{ background:var(--acid); padding:var(--pad-xl) 0; }
.accent__head{ max-width:var(--max); margin:0 auto clamp(44px,6vw,80px); padding-inline:var(--pad); }
.accent__head .nano{ margin-bottom:20px; }

/* ============ STEPS ============ */
.steps-sec{ padding:var(--pad-m) 0; }

/* ============ DARK ============ */
.dark{ background:var(--black); color:var(--paper); padding:var(--pad-xl) var(--pad); }
.dark__inner{ max-width:var(--max); margin-inline:auto; }
.dark .nano{ margin-bottom:clamp(36px,4vw,56px); }
.dark__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(28px,3vw,48px); padding-bottom:clamp(48px,6vw,80px); border-bottom:1px solid var(--hair-inv); }
.dcol h3{ font-size:clamp(1.5rem,1.2rem + 1.4vw,2.2rem); margin-bottom:12px; }
.dcol p{ color:#b7b6b3; font-size:16px; line-height:1.5; }
.quote{ position:relative; max-width:960px; padding:clamp(48px,6vw,80px) 0; }
.quote__mark{ position:absolute; left:-.06em; top:-.35em; font-size:clamp(6rem,12vw,11rem); line-height:1; color:var(--acid); opacity:.9; font-family:Georgia,serif; }
.quote p{ position:relative; font-size:clamp(1.6rem,1.1rem + 2.4vw,3.2rem); font-weight:500; line-height:1.14; letter-spacing:-.028em; }
.quote em{ color:var(--acid); }
.dark > .dark__inner > .btn{ margin-top:8px; }

/* ============ TRADE ============ */
.trade{ max-width:var(--max); margin-inline:auto; padding:var(--pad-l) var(--pad); }
.trade__grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(16px,2vw,24px); }
.tcard{ border:1px solid var(--hair); border-radius:var(--r-card); padding:clamp(30px,3.6vw,52px); background:var(--bone); }
.tcard--yellow{ background:var(--acid); border-color:var(--acid); }
.tcard .nano{ margin-bottom:22px; }
.tcard h3{ font-size:clamp(1.5rem,1.2rem + 1.4vw,2.2rem); margin-bottom:14px; }
.tcard p{ color:var(--stone); font-size:16px; line-height:1.5; max-width:42ch; }
.tcard--yellow p{ color:var(--ink); opacity:.82; }

/* ============ DELIV ============ */
.deliv{ padding:var(--pad-m) 0; }
.deliv__grid{ max-width:var(--max); margin-inline:auto; padding-inline:var(--pad); display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(16px,2vw,24px); }
.dblock{ border-top:2px solid var(--ink); padding-top:24px; }
.dblock h3{ font-size:clamp(1.4rem,1.1rem + 1vw,1.9rem); margin-bottom:6px; }
.dblock__sub{ color:var(--ash); font-size:14px; margin-bottom:22px; }
.drow{ padding:16px 0; border-top:1px solid var(--hair-2); }
.drow b{ display:block; font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; margin-bottom:6px; }
.drow span{ color:var(--stone); font-size:15px; line-height:1.45; }

/* ============ CTA / FORM ============ */
.cta{ background:var(--ink); color:var(--paper);
  display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,5vw,72px); align-items:center; padding:var(--pad-l) var(--pad); }
.cta__text{ justify-self:end; width:100%; max-width:600px; }
.cta__text .nano{ margin-bottom:20px; }
.cta .h1{ color:var(--paper); margin-bottom:30px; }
.cta__contacts{ display:flex; flex-direction:column; gap:8px; }
.cta__contacts a{ font-size:clamp(1.5rem,1.1rem + 1.6vw,2.2rem); font-weight:600; letter-spacing:-.02em; font-variant-numeric:tabular-nums; width:fit-content; }
.cta__contacts span{ color:#b7b6b3; font-size:15px; }
.form{ background:var(--paper); color:var(--ink); border-radius:var(--r-card); padding:clamp(26px,3vw,40px);
  display:grid; grid-template-columns:1fr 1fr; gap:18px; justify-self:start; width:100%; max-width:600px; }
.field{ display:flex; flex-direction:column; }
.field:nth-child(4), .form .btn, .form__hint, .form__ok{ grid-column:1/-1; }
.field label{ font-size:12px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; color:var(--stone); margin-bottom:9px; }
.field input, .field select{ font-family:var(--f); font-size:16px; color:var(--ink); background:var(--bone);
  border:1px solid var(--hair); border-radius:var(--r-card); padding:14px 16px; transition:border-color .2s; }
.field input::placeholder{ color:var(--ash); }
.field input:focus, .field select:focus{ outline:none; border-color:var(--ink); }
.field input.err{ border-color:#c62; background:#fff6f3; }
.field select{ appearance:none; cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23262626' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 16px center; background-size:12px; }
.form .btn{ padding:17px; }
.form__hint{ font-size:12px; color:var(--ash); text-align:center; }
.form__ok{ background:var(--acid); color:var(--ink); border-radius:var(--r-card); padding:16px; text-align:center; font-weight:600; }

/* ============ FOOTER ============ */
.footer{ max-width:var(--max); margin-inline:auto; display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:32px;
  padding:clamp(56px,7vw,88px) var(--pad) 40px; }
.footer__logo{ font-weight:700; font-size:20px; letter-spacing:-.02em; }
.footer__brand p{ color:var(--stone); font-size:14px; line-height:1.55; margin-top:14px; max-width:320px; }
.footer__nav{ display:flex; flex-direction:column; gap:11px; }
.footer__nav a{ color:var(--stone); font-size:15px; width:fit-content; }
.footer__nav a:hover{ color:var(--ink); }
.footer__contact{ display:flex; flex-direction:column; gap:8px; align-items:flex-start; }
.footer__contact a{ font-weight:600; font-size:18px; font-variant-numeric:tabular-nums; }
.footer__contact span{ color:var(--stone); font-size:14px; }

/* ============ FAB ============ */
.fab{ position:fixed; right:16px; bottom:16px; z-index:50; display:none;
  background:var(--acid); color:var(--ink); font-weight:600; font-size:15px; padding:14px 24px; border-radius:var(--r-full); }

/* ============ REVEAL (JS-guarded, content visible without JS) ============ */
.js .reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--exp), transform .9s var(--exp); }
.js .reveal.in{ opacity:1; transform:none; }
/* masked headings: container stays, inner lines slide */
.js .reveal:has(.ml){ opacity:1; transform:none; }
.js .reveal .ml > span{ transform:translateY(115%); transition:transform .95s var(--exp); }
.js .reveal.in .ml > span{ transform:translateY(0); }
.js .reveal .ml:nth-child(2) > span{ transition-delay:.08s; }
.js .reveal .ml:nth-child(3) > span{ transition-delay:.16s; }
/* image shutter */
.js .reveal-img img{ clip-path:inset(0 0 100% 0); transform:scale(1.06); transition:clip-path 1s var(--exp), transform 1.1s var(--exp); }
.js .reveal-img.in img{ clip-path:inset(0 0 0 0); transform:scale(1); }
/* stagger cells/cards inside grids */
.js .stitched .cell:nth-child(2), .js .dark__grid .dcol:nth-child(2), .js .deliv__grid .dblock:nth-child(2){ transition-delay:.08s; }
.js .stitched .cell:nth-child(3), .js .dark__grid .dcol:nth-child(3), .js .deliv__grid .dblock:nth-child(3){ transition-delay:.16s; }
.js .stitched .cell:nth-child(4){ transition-delay:.24s; }

/* ============ RESPONSIVE ============ */
@media (max-width:1000px){
  .nav__links, .nav__phone{ display:none; }
  .nav__burger{ display:flex; }
  .fab{ display:inline-flex; }
  .split{ grid-template-columns:1fr; gap:40px; }
  .accent .stitched, .stitched--steps{ grid-template-columns:repeat(2,1fr); }
  .cta{ grid-template-columns:1fr; }
  .cta__text{ justify-self:stretch; max-width:none; }
  .form{ justify-self:stretch; max-width:none; }
}
@media (max-width:720px){
  .dark__grid, .deliv__grid, .trade__grid{ grid-template-columns:1fr; }
  .footer{ grid-template-columns:1fr; gap:28px; }
  .form{ grid-template-columns:1fr; }
  .field:nth-child(4){ grid-column:auto; }
  .hero__meta{ display:none; }
  .hero__cta{ flex-direction:column; align-items:stretch; }
  .hero__cta .btn{ width:100%; }
  .hero__scrim{ background:linear-gradient(to top, rgba(17,17,16,.78) 8%, rgba(17,17,16,.3) 46%, rgba(17,17,16,.1)); }
}
@media (max-width:520px){
  .accent .stitched, .stitched--steps{ grid-template-columns:1fr; }
}

@media (hover:none){ [data-magnetic]{ transform:none !important; } }
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
  .js .reveal, .js .reveal.in{ opacity:1 !important; transform:none !important; }
  .js .reveal .ml > span{ transform:none !important; }
  .js .reveal-img img{ clip-path:none !important; transform:none !important; }
  .hero__media{ transform:none !important; }
}